When respondents are asked which of the leading two candidates they would prefer in a forced choice, Boris leads Ken by 54% to 46%

Following a month in which he has faced criticism over his personal tax affairs, there have been significant drops in the public's perceptions of Ken Livingstone.

The proportion of people who think he sticks to what he believes in has dropped to 34% (down 6 points)

The proportion who see him as in touch with ordinary people is down to 32% (down 5 points)

There has also been a shift in how the public perceive the respective records of the two main candidates. Last month 40% of people thought Ken had achieved more than Boris during his time as mayor with 31% thinking Boris had the better record.

Boris has now closed that gap, with 36% thinking he has achieved more, compared to Ken's 34%.